Cleanup some issues left over from previous reviews

Bug: 183235980
Test: m nothing
Change-Id: I187765c56b889445de3a4729405ee745e5f73729
diff --git a/android/fixture.go b/android/fixture.go
index 6c9ea6b..8d62958 100644
--- a/android/fixture.go
+++ b/android/fixture.go
@@ -138,7 +138,7 @@
 // }
 //
 // func TestJavaStuff(t *testing.T) {
-//   result := android.GroupFixturePreparers(t,
+//   result := android.GroupFixturePreparers(
 //       prepareForJavaTest,
 //       android.FixtureWithRootAndroidBp(`java_library {....}`),
 //       android.MockFS{...}.AddToFixture(),